Deserts receive less than ____________________ centimeters of rain per year, on average. Fill in the blank(s) with the appropriate word(s)
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Why is dietary cholesterol and cholesterol synthesized in the liver not available for synapse formation?
A) There is a subtle between these cholesterols and the cholesterol synthesized in the nerve cells of the brain. B) LDL cannot cross the blood-brain barrier. C) both a and b D) neither a nor b
There are not any positive environmental effects of urbanization.
Answer the following statement true (T) or false (F)
Which of the following is true of the atomic weight of an element?
A) It is the weight of heaviest isotope. B) It is the weight lightest isotope. C) It is the weight of the most abundant isotope. D) It is a weighted average obtained from the weights and abundances of the isotopes.
For ecosystems, what specific step can reduce the impact of global temperature increase?
A) Establish efficient irrigation systems. B) Conservation of wetlands and biodiversity C) Implement immunization programs to prevent spread of diseases. D) Develop drought-hardy plants. E) Improve coastal dikes and canals.